p38 MAPK Agonist

Diprovocim is a potent TLR1/TLR2 agonist. Diprovocim elicits full agonist activity in human THP-1 cells (EC₅₀=110 pM). Diprovocim stimulates the release of TNF-α from mouse macrophages (EC₅₀=1.3 nM). Diprovocim activates downstream MAPK and NF-κB signaling pathway. Diprovocim displays strong adjuvant activity in mice, particularly abetting cellular immune responses.

Orcinol glucoside is an orally active, blood-brain barrier permeable osteoblast proliferation promoter that targets the Nrf2/Keap1, mTOR and p38 signaling pathways. Orcinol glucoside promotes Nrf2 nuclear translocation, upregulates antioxidant enzyme levels, enhances the phosphorylation of mTOR and p70S6K, and inhibits the enzymatic activity of HAS2 as well as the nuclear translocation of GR. Orcinol glucoside also alleviates oxidative stress, inhibits autophagic flux, osteoclastogenesis and TGF-β1-induced M2 polarization, while reducing collagen deposition and effectively promoting the proliferation, differentiation and mineralization of osteoblasts. Orcinol glucoside also exhibits anti-pulmonary fibrosis, anxiolytic and antidepressant activities. Orcinol glucoside can be used in the research of senile and glucocorticoid-induced osteoporosis, idiopathic pulmonary fibrosis (IPF), anxiety and other related diseases.

Chemerin15 is an anti-inflammatory peptide derived from Chemerin. Chemerin15 binds to ChemR23. Chemerin15 inhibits TNFα-induced activation of Syk, ERK and Src kinases. Chemerin15 increases the expression of p-p38 mRNA and protein. Chemerin15 mediates phagocytosis, resolution of inflammation, CD62L shedding and downregulation of PSGL-1 expression in macrophages and microglia. Chemerin15 inhibits neutrophil-mediated vascular inflammation and myocardial ischemia-reperfusion injury via ChemR23. Chemerin15 enhances microglial phagocytosis, thereby alleviating cerebral ischemia-reperfusion injury.

SF-9-2 is a PD-L1/PD-1 binding inhibitor (IC₅₀ = 24.9 nM). SF-9-2 inhibits epithelial-mesenchymal transition, migration, invasion, and proliferation of SK-N-SH cells, and also induces apoptosis and cell cycle arrest. SF-9-2 blocks PD-L1-induced SK-N-SH cell growth through the MAPK signaling pathway. SF-9-2 restores GSK-3β activity and enhances PD-L1 degradation through the ubiquitin-proteasome pathway. SF-9-2 inhibits tumor growth in the SK-N-SH NOG mouse model without significant toxicity. SF-9-2 also acts as an immune checkpoint inhibitor, blocking PD-L1 to restore T cell function. SF-9-2 can be used in neuroblastoma research.

EGFR-IN-154 (compound 4c) is an EGFR inhibitor with EC₅₀ values of 0.16 μM, 21.73 μM and 41.56 μM against EGFR Del19, EGFR WT and EGFR L858R, respectively. EGFR-IN-154 shows anticancer activity on various cance cell lines. EGFR-IN-154 induces mitochondrial apoptosis, and decreases pERK1/2 and pAkt levels, but increases pJNK and pp38 levels.

Cannabisin D inhibits proliferation and migration of glioblastoma cells through MAPKs signaling.